{"product_id":"20876","title":"Limit Control Switch – Replaces Honeywell L4064B2210 Harman 3-20-23139 – NBK-20876","description":"\u003ch2\u003eNBK-20876 – Limit Control Switch – NBK\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20876 Limit Control Switch\u003c\/strong\u003e is a dependable OEM-equivalent replacement designed for hearth and HVAC safety control applications. This switch helps regulate operating temperatures and provides critical overheat protection to ensure safe and efficient system performance. It is a direct replacement for the widely used \u003cstrong\u003eHoneywell L4064B2210\u003c\/strong\u003e limit control switch and compatible Grainger and Harman reference models.\u003c\/p\u003e\n\u003cp\u003eBuilt to meet or exceed OEM specifications, the NBK-20876 provides a precise fit and reliable temperature control, making it an ideal solution for stove technicians and HVAC professionals servicing heating equipment.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Compatible Replacement:\u003c\/strong\u003e Direct replacement for Honeywell L4064B2210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Safety Control:\u003c\/strong\u003e Helps protect heating systems from overheating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Operation:\u003c\/strong\u003e Supports consistent system performance and safe operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Cross-Reference Support:\u003c\/strong\u003e Compatible with Grainger and Harman models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 20876\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Limit Switch \/ Safety Control \/ Hearth Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Brand:\u003c\/strong\u003e Honeywell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces OEM:\u003c\/strong\u003e L4064B2210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Heating system limit control switch replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEquivalent To\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHoneywell:\u003c\/strong\u003e L4064B2210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrainger:\u003c\/strong\u003e 2E820, 2E139, 5D51-78\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman:\u003c\/strong\u003e 3-20-23139\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the NBK-20876?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20876\u003c\/strong\u003e is a trusted limit control switch replacement for heating professionals seeking OEM-level compatibility and dependable safety performance. Its direct-fit design helps maintain proper temperature regulation and protects equipment from thermal damage.\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect all power sources before servicing limit switches or control components.\u003c\/li\u003e\n\u003cli\u003eVerify temperature range and mounting specifications match the original switch.\u003c\/li\u003e\n\u003cli\u003eInspect wiring connections for corrosion or wear during replacement.\u003c\/li\u003e\n\u003cli\u003eTest system operation after installation to confirm proper safety shutoff function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cp\u003eThermostats, Ignition Modules, Safety Sensors, HVAC Control Boards\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIAL ORDER NOTICE:\u003c\/strong\u003e This is a special order item sourced from NBK. Please allow 1–2 business days for processing prior to shipment.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52401227039088,"sku":"SO-20876","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/4463\/3444\/files\/20876-L4064B2210-1.webp?v=1770412205","url":"https:\/\/total-hearth.com\/products\/20876","provider":"Total Hearth","version":"1.0","type":"link"}